Editing Extended Unix Code (section)

===DEC Kanji===
[[Digital Equipment Corporation]] defines two variants of EUC-JP only partly conforming to the EUC packed format, but also bearing some resemblance to the complete two-byte format. The overall format of the "DEC Kanji" encoding mostly corresponds to fixed-length (complete two-byte) EUC; however, code set 0 is not required to be left-padded with null bytes (similarly to the packed format).<ref name="lundeF" /> JIS X 0208 is, as usual, used for code set 1; code set 2 (half-width katakana) is absent; code set 3 is encoded like the two-byte fixed width format (i.e. without a shift byte and with only the first high bit set), but used for two-byte user defined characters rather than being specified for JIS X 0212.<ref name="lundeF" /> In the basic "DEC Kanji" encoding, only the first 31 rows of code set 3 are used for user-defined characters: rows 32 through 94 are reserved, similarly to the unused rows in code set 1.<ref name="lunde2009appE" />

The "Super DEC Kanji" encoding accepts codes both from the "DEC Kanji" encoding and from packed-format EUC, for a total of five code-sets.<ref name="lundeF">{{citation|mode=cs1 |title=Appendix F: Vendor Encoding Methods |work=CJKV Information Processing |edition=2nd |last=Lunde |first=Ken |date=13 January 2009 |isbn=978-0-596-51447-1 |url=https://resources.oreilly.com/examples/9780596514471/blob/master/cjkvip2e-appF.pdf}}</ref> It also allows the entire user defined code set, and the unused rows at the ends of the JIS X 0208 and JIS X 0212 code sets (rows 85–94 and 78–94 respectively), to be used for user-defined characters.<ref name="lunde2009appE" />